/*
silverPDF is sponsored by Aleyant Systems (http://www.aleyant.com)

silverPDF is based on PdfSharp (http://www.pdfsharp.net) and iTextSharp (http://itextsharp.sourceforge.net)

Developers: Ai_boy (aka Oleksii Okhrymenko)

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above information and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR SPONSORS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

*/
using System;
using System.Diagnostics;
//using System.Drawing;
using PdfSharp.Drawing;
using PdfSharp.Pdf;
using PdfSharp.Pdf.Advanced;

namespace Graphics
{
    /// <summary>
    /// The base class with some helper functions.
    /// </summary>
    public class Base
    {
        protected XColor backColor;
        protected XColor backColor2;
        protected XColor shadowColor;
        protected double borderWidth;
        protected XPen borderPen;

        protected Base()
        {
            this.backColor = XColors.Ivory;
            this.backColor2 = XColors.WhiteSmoke;

            this.backColor = XColor.FromArgb(212, 224, 240);
            this.backColor2 = XColor.FromArgb(253, 254, 254);

            this.shadowColor = XColors.Gainsboro;
            this.borderWidth = 4.5;
            this.borderPen = new XPen(XColor.FromArgb(94, 118, 151), this.borderWidth);//new XPen(XColors.SteelBlue, this.borderWidth);
        }

        /// <summary>
        /// Draws the page title and footer.
        /// </summary>
        public void DrawTitle(PdfPage page, XGraphics gfx, string title)
        {
            XRect rect = new XRect(new XPoint(), gfx.PageSize);
            rect.Inflate(-10, -15);
            XFont font = new XFont("Verdana", 14, XFontStyle.Bold);
            gfx.DrawString(title, font, XBrushes.MidnightBlue, rect, XStringFormats.TopCenter);

            rect.Offset(0, 5);
            font = new XFont("Verdana", 8, XFontStyle.Italic);
            XStringFormat format = new XStringFormat();
            format.Alignment = XStringAlignment.Near;
            format.LineAlignment = XLineAlignment.Far;
            gfx.DrawString("Created with " + PdfSharp.ProductVersionInfo.Producer, font, XBrushes.DarkOrchid, rect, format);

            font = new XFont("Verdana", 8);
            format.Alignment = XStringAlignment.Center;
            gfx.DrawString(MainPage.document.PageCount.ToString(), font, XBrushes.DarkOrchid, rect, format);

            MainPage.document.Outlines.Add(title, page, true);
        }

        /// <summary>
        /// Draws a sample box.
        /// </summary>
        public void BeginBox(XGraphics gfx, int number, string title)
        {
            int dEllipse = 15;
            XRect rect = new XRect(0, 20, 300, 200);
            if (number % 2 == 0)
                rect.X = 300 - 5;
            rect.Y = 40 + ((number - 1) / 2) * (200 - 5);
            rect.Inflate(-10, -10);
            XRect rect2 = rect;
            rect2.Offset(this.borderWidth, this.borderWidth);
            gfx.DrawRoundedRectangle(new XSolidBrush(this.shadowColor), rect2, new XSize(dEllipse + 8, dEllipse + 8));
            XLinearGradientBrush brush = new XLinearGradientBrush(rect, this.backColor, this.backColor2, XLinearGradientMode.Vertical);
            gfx.DrawRoundedRectangle(this.borderPen, brush, rect, new XSize(dEllipse, dEllipse));
            rect.Inflate(-5, -5);

            XFont font = new XFont("Verdana", 12, XFontStyle.Regular);
            gfx.DrawString(title, font, XBrushes.Navy, rect, XStringFormats.TopCenter);

            rect.Inflate(-10, -5);
            rect.Y += 20;
            rect.Height -= 20;
            //gfx.DrawRectangle(XPens.Red, rect);

            this.state = gfx.Save();
            gfx.TranslateTransform(rect.X, rect.Y);
        }

        public void EndBox(XGraphics gfx)
        {
            gfx.Restore(this.state);
        }

        /// <summary>
        /// Gets a five-pointed star with the specified size and center.
        /// </summary>
        protected static XPoint[] GetPentagram(double size, XPoint center)
        {
            XPoint[] points = Pentagram.Clone() as XPoint[];
            for (int idx = 0; idx < 5; idx++)
            {
                points[idx].X = points[idx].X * size + center.X;
                points[idx].Y = points[idx].Y * size + center.Y;
            }
            return points;
        }

        /// <summary>
        /// Gets a normalized five-pointed star.
        /// </summary>
        static XPoint[] Pentagram
        {
            get
            {
                if (pentagram == null)
                {
                    int[] order = new int[] { 0, 3, 1, 4, 2 };
                    pentagram = new XPoint[5];
                    for (int idx = 0; idx < 5; idx++)
                    {
                        double rad = order[idx] * 2 * Math.PI / 5 - Math.PI / 10;
                        pentagram[idx].X = Math.Cos(rad);
                        pentagram[idx].Y = Math.Sin(rad);
                    }
                }
                return pentagram;
            }
        }
        static XPoint[] pentagram;

        XGraphicsState state;
    }
}
